baber/WOPTO huggingface dataset:
Patent GB-2038574-A (GB)
Title: Protecting loudspeaker systems
IPC: H04R3/00
Filed: 1979-10-31
Abstract: The drive unit or units 1, 2, 3 of a loudspeaker are disconnected from an amplifier 4 when the voltage across, or the current through, the drive unit, or one of the drive units, exceeds a predetermined level by a protective system including a bistable device 7, comprising a complementary pair of transistors (28 and 29, Fig. 2, not shown), arranged to change state when the voltage on an input terminal (14) exceeds a predetermined level, thereby energising a relay to open normally closed contacts (5) in the output circuit of the amplifier 4. Signals indicating the voltage across, or the current through, the various drive coils are connected to the input terminal 14 of the protection device through individual rectifiers 13, 18, 21, 25 so that different levels of protection can be arranged for the various frequency ranges. <IMAGE>
Patent GB-2062481-A (GB)
Title: Stirring apparatus
IPC: C12M3/02
Filed: 1979-11-07
Abstract: The apparatus comprises a stirring flask (5) with a stirrer (4) extending within the flask. The flask is held to the stirrer by means of a flexible coupling (6) which enables the other end of the flask to be moved in an orbital path by rotation of a disc (9) carrying an eccentric pin (19) engaging a dimple (21) in the flask base. The pin (19) is radially adjustable. The apparatus is particularly (but not exclusively) for stirring microcarriers in a liquid culture medium, wherein the microcarriers provide attachment surfaces to permit cell growth when the cells are of the "anchorage dependent" type. During stirring the stirrer remains stationary with respect to the moving flask and the resulting stirring action imparts vertical and horizontal components of force to the microcarriers. This enables suspension of the microcarriers to be achieved at lower stirring speeds than possible using conventional stirring techniques, thus improving cell yield. <IMAGE>
Patent GB-2036486-A (GB)
Title: Vehicle combustion engine of the compound type
IPC: F02B41/10
Filed: 1979-06-28
Abstract: A combustion engine assembly of the compound type for vehicles, comprising a diesel engine (1) a displacement compressor (5) and a turbine (7) driven by the exhaust gas, together with a torque-transmitting mechanical transmission (9) with fixed gearing between the units included in the assembly. The compressor (5) can thereby be driven from the engine (1) and/or from the turbine (7). To achieve the highest total level of efficiency, the assembly is so adapted that the engine (1) generally operates with the intake pressure lower than the outlet pressure. The reduction of power which the engine (1) suffers thereby is more than compensated by increased power production by the turbine (7). The compressor (5) is advantageously a screw compressor equipped with a built-in slide valve (23) which regulates the amount of air which is compressed in the compressor according to the engine load and rotary speed.
Patent GB-2038795-A (GB)
Title: Apparatus for producing sterile water
IPC: C02F9/00
Filed: 1979-11-20
Abstract: In an apparatus for producing sterile water an ultrafiltration module and an ultraviolet steriliser are arranged in series between an untreated water connection and a dispensing container for the sterile water.
Patent GB-2042578-A (GB)
Title: Phosphorescent plastics compositions
IPC: G09F13/20
Filed: 1980-01-03
Abstract: Thermoplastic composition having a phosphorescent effect, particularly for the production of flexible labels, comprises a resin of low polymerisation point e.g. PVC, a plasticiser e.g. butylbenzyl phthalate and polypropenyl glycol adipate, a stabilizer having absorbancy to U.V. e.g. dicyandiamide, and a luminescent pigment encapsulated in polyvinyl alcohol e.g. Zn/CdS : Cu. A lubricating agent e.g. ethyl palmitate and a filler e.g. talc, may be included in the composition.
Patent GB-2068704-A (GB)
Title: Turf-treatment apparatus
IPC: A01B63/102
Filed: 1980-02-07
Abstract: A powered mobile unit for turf-care apparatus comprises a chassis 10, driven and steerable front wheels 12,a seat 16 carried at least mainly by the rear wheels 14, a linkage 18 behind the rear wheels 14 for the attachment of turf-treating implements 36; and powered hydraulic means 22 capable of activating the linkage 18 to lift an attached implement clear of the ground and of applying such downward pressure to the implement 36 as to cause the rear wheels 14 to be raised clear of the ground with an operator in the seat 16, whilst the unit is in motion. <IMAGE>
Patent GB-2073582-A (GB)
Title: Baking pans
IPC: A21B3/13
Filed: 1980-03-25
Abstract: A hearth bread baking pan set comprises a single sheet of material formed to provide an inner structure having multiple baking moulds (20) with rib members (40) between adjacent moulds and disposed within and secured to an outer structure (52). The outer structure (52) and rib members cooperate to provide a support structure for the baking moulds, spaced therefrom. The sheet material has flanges which are supported by flanges on the structure (52). <IMAGE>
Patent GB-2049494-A (GB)
Title: Centrifugal separator
IPC: B04B5/00
Filed: 1980-04-11
Abstract: A centrifugal separator for separating contaminants from contaminated fluids comprising a casing (1) defining a chamber within which a hollow rotor (10) is rotatably carried by bearing means (8,9). Contaminated fluid is received within the rotor from an inlet passage (4, 11, 20) passing through said bearing means. The rotor is rotated, to effect centrifugal separation of the contaminants from the fluid by fluid discharging from the interior of the motor through reaction nozzles (14) into the casing chamber which is provided with a fluid outlet (2). <IMAGE>
Patent GB-2043029-A (GB)
Title: Device for loading and unloading lift truck
IPC: B66F9/12
Filed: 1979-08-17
Abstract: The present invention discloses a load lifting unit for a lift truck, and more particularly, an improved structure of a load lifting unit for a counterbalance type lift truck. In the invention, to increase the loading capacity and longitudinal stability of the lift truck as well as to improve the forward view from the lift truck, two lift cylinders (7) are separately disposed on the sides of a pair of upright assemblies (1) of the load lifting unit, respectively, to provide a space (17) between the upright assemblies for allowing a lift member (4) to be lifted and lowered within the space and for allowing actuating means of various operations attachments engaged with the lift member to be accommodatedly arranged within the space.
Patent GB-2051699-A (GB)
Title: Solid tyre
IPC: B60C7/28
Filed: 1980-06-19
Abstract: A solid tyre comprises a carcass and a tread portion. The carcass consists of one or more layers (10, 11) of parallel filaments (e g steel) making an angle with the mid-circumferential plane of the tyre and embedded in a rubbery material, together with one or more layers of wire (30, 31, 32, 33) wound circumferentially around the layers 10 and 11. Each layer 30, 31, 32 and 33 is separated from the next layer by means of a thin interply (40, 41, 42, 43). A preformed tread portion (50) is placed on top of the final interlayer (43) and the whole assembly subjected to heat and pressure to vulcanise the rubber and unite all the components one to another. The layers of parallel filaments replace the steel band conventionally used in the manufacture of solid tyres. The tyres of the present invention can, therefore, be fitted to vehicle wheels using much lower pressures than required for the fitting of "banded" tyres. <IMAGE>
Patent GB-2081630-A (GB)
Title: Method, apparatus and gas gun for forming articles by impact load
IPC: B21D26/08
Filed: 1980-08-12
Abstract: A method for forming articles by impact load caused in glycerine or other liquid 3 by a shot from a gas gun 1 consists in that a die 4 together with a blank 5 and a gas gun barrel are immersed in the liquid. Thereafter the gas gun barrel bore is filled with an explosive gas mixture the initial pressure of which within the barrel bore exceeds the hydrostatic pressure of the liquid 3, and the charge is ignited. The gas gun is closed by a membrane 11 which is broken by the explosion and has ducts 9 for delivering an explosive gas mixture and an igniter 10. According to another embodiment the gas gun 1 for carrying out the above method has an axial bore with an outlet 8 on the end face of the barrel, ducts 9 for delivering an explosive gas mixture to the bore 7, and igniter 10 built into the barrel at the breech end thereof. The ducts may be close to the open end of the barrel 6 and directed at an acute angle (Fig. 3). A swivelling cantilever 22 may carry the gas gun 1. <IMAGE>
Patent GB-2081117-A (GB)
Title: Mixing and dispensing machine
IPC: B01F7/00
Filed: 1980-07-29
Abstract: The machine, e.g. for animal feed, has a container for the material and a rotor shaft 17 is rotable within the container. The rotor shaft carries a series of rigid mixing and unloading members 18 which extend outwards of the shaft to adjacent the wall of the container. The members 18 include collars 19 loosely carried on the shaft and coupled to one another by dogs 27, 28. The collars and dogs are arranged so that, on driving a collar at one end of the shaft by rotating the shaft, drive to the other collars is progressively taken up until all the members are being rotated. <IMAGE>
Patent GB-2080787-A (GB)
Title: Internal sealant for concrete
IPC: C04B40/04
Filed: 1980-01-18
Abstract: A method and composition are provided for making a finished concrete structure having a water-impervious surface. A particulate composition of a paraffin wax material, glyceryl fatty-acid esters, and stearic or palmitic acid is added to the aggregate phase and mixed in a wet hydraulic Portland cement mixture. The resultant slurry is then poured and cured. The surface of the cured structure is thereafter heated as by solarization under black pigmented polyethylene sheets to cause the wax particles to melt and invade capillary and other interstices in the surface region of the concrete structure, thereby rendering said structure impervious to the infusion of water and water solubles.
Patent GB-2088422-A (GB)
Title: Surface treatment of wood
IPC: B27K3/08
Filed: 1980-11-05
Abstract: Wood having a high moisture content is surface treated with a hot oil optionally under vacuum, and optionally in the presence of further additives.
Patent GB-2063838-A (GB)
Title: Apparatus for loading goods into storage racks and for unloading goods therefrom
IPC: B66F9/07
Filed: 1980-11-21
Abstract: Apparatus for loading goods into storage racks and for unloading goods therefrom comprises a powered lift truck (15) and a storage member (27), which can be releasably connected together to move together in narrow gangways between rows of storage racks. The truck (15) has load lifting means which can be raised or lowered by way of a mast (20) and directed to either side of the truck, or to the front thereof. The storage member (27) is a tower structure having a plurality of vertically spaced apart locations dimensioned to receive, for example, loaded pallets transferred from the storage racks by the load lifting means of the truck (15). The provision of the storage member with the lift truck enables the truck continually to transfer loaded pallets between the storage racks and said locations as it moves along a gangway. <IMAGE>
Patent GB-2090652-A (GB)
Title: Improvements Relating to Heat Exchangers
IPC: F28F9/02
Filed: 1981-01-02
Abstract: A heat exchanger assembly comprises a pair of seamless aluminium alloy headers 2, 3 disposed in spaced apart parallel relationship and formed (e.g. in walls 7 thereof) with spaced-apart elongate slots arranged to receive opposite ends of flattened tubes 8 of an aluminium alloy the outer surfaces of which are coated with a brazing alloy, end plates 8a, 17 extending between corresponding ends of the headers parallel with the tubes 8 and having their face-to-face surfaces coated with a brazing alloy, and inlet and outlet connections 5 communicating with the headers, the assembly (including e.g. corrugated strips 19) being brazed together in known manner. In particular the headers 2, 3 are impact extruded to provide a header of D-shaped cross-section with a base 4, and a connector 5 which may alternatively be a separate member. Portions of the plate 8a may form header end closures 10. <IMAGE>
Patent GB-2079792-A (GB)
Title: Dyestuff composition for treatment of dolls artificial hair
IPC: C09B67/42
Filed: 1981-01-22
Abstract: The present invention relates to a dyestuff composition for treating a doll's artificial hair, the color of which composition changes with change in pH. The composition being removable by water and is packaged so as to be applied to dry hair means of a device comprising a porous hollow body for imbibition and controlled release of the liquid composition. The dyestuffs used are preferably food grade acid dyes, for example, Cl. Nos. 42045, 42051, 45380, 45430, 162551, 19140, 42090, and 45170. The dyestuff may be applied at a pH higher than that at which colour change takes place and after application the colour may be changed by treatment with an aqueous solution of 0.001-0.00001 N hydrochloric acid
Patent GB-2071538-A (GB)
Title: An installation for controlling the clamping force of a hydraulically operated clamping device
IPC: B23B31/30
Filed: 1981-02-19
Abstract: The installation comprises a double-acting hydraulic cylinder 1 having a piston 2 which forms chambers A and B and the rod of which is connected to a clamping device, for example a chuck of a grinding machine. For actuating the clamping cylinder 1 for closing the clamping device, pressurised hydraulic fluid is fed via line 12, a non-return valve 10, a directional valve VW1 and line 15 to chamber B of the clamping cylinder 1. Hydraulic fluid displaced from chamber A is conducted via line 16 to a pressure-adjusting valve 3' which pre-stresses the displaced fluid to vary the clamping force. The valve 3' has a piston 4 which is loaded by a compression spring 5 the force of which is adjustable by means of a setting spindle 6 carried in a further piston 22 whose outward stroke is limited by a further setting spindle 23. The excess pressure fluid from the valve 3' is conducted via lines 17 and 18 and directional valve VW1 to a collecting tank 19. To open the clamping device the valve VW1 is operated so that the hydraulic fluid from chamber B is conducted to the collecting tank 19 and the chamber A is pressurised via line 18, non-return valve 11 and line 16. To provide a two-stage clamping, i.e. a reduced clamping force during finish machining, the hydraulic fluid is also conducted via an appropriately operated second directional valve VW2 and an adjustable throttle VDr1 to a chamber C of the pressure- adjusting valve 3', to additionally load the piston 4 so as to increase the prestressing of the fluid displaced from chamber A and thus reducing the clamping force. <IMAGE>
Patent GB-2073552-A (GB)
Title: Telecommunication system
IPC: H04B5/00
Filed: 1980-08-12
Abstract: A radiating line telecommunication system has a pair of lines respectively connected to a base transmitter (Tx) and receiver (Rx). Unidirectional amplifiers (A) or repeaters along the lines interconnect them so that signals are conducted alternately in opposite directions. The signal in each amplifier is varied in phase cyclically with respect to the phase of the signal in the previous or next amplifier, and a carrier wave of the transmitted signal is split in frequency into two components so spaced in frequency that the spacing frequency is resonant with the length of transmission line between successive repeaters. <IMAGE>
Patent GB-2097901-A (GB)
Title: Valve suitable for controlling teeming from furnace tapholes
IPC: F16K3/30
Filed: 1981-05-01
Abstract: Metal flow from furnace taphole to pouring trough (21) is controlled by a valve (14) interposed therebetween, the valve having a stationary orificed valve plate and a companion slide plate (16) for closing or opening the orifice to flow. An actuating beam member (20) forming part of a parallel motion linkage (28) extends upwardly and obliquely from the slide plate (16), the actuating member being thrust against the slide plate by a swinging spring strut (25) of the linkage. A ram (48) connected to the linkage via a crank (46), a shaft (35) and a pivoted lever (34) displaces the linkage (28) when extended or contracted and this moves the actuating member (20) along a predetermined path, its oblique attitude being preserved, to open or shut the valve (14). <IMAGE>
Patent GB-2082732-A (GB)
Title: A Replacement Valve Assembly for a Liquid Flow Control Device
IPC: F16K1/04
Filed: 1981-06-11
Abstract: A replacement valve assembly for a liquid flow control device, said assembly comprising a seat and a valve member to cooperate with the seat, the seat has a conical seating surface which is on the exterior of the seat and a through bore, the valve member has an annular recess with an angled face to co-operate with the seat conical surface to form a liquid tight joint and another angled face which will in the event of the valve member being forced onto the valve seat after the liquid tight joint has been formed then seal against the corner where the bore exists from the seat to provide a secondary seal and also prevent the valve member being forced harder into contact with the seat. <IMAGE>
Patent GB-2083351-A (GB)
Title: Seat for invalid walker
IPC: A61H3/00
Filed: 1981-07-30
Abstract: A seat 42 for detachably mounting on an invalid walker comprises a rectangular, foldable sheet. The seat can be mounted on vertical frame members 33 of the walker by four hooks 52 detachably connected at the desired height to respective frame members by hose clamps 54 and rings 62 attached to the sheet corners and placed on a respective hook 52. <IMAGE>
Patent GB-2088169-A (GB)
Title: Multi-mode Colour Copier
IPC: H04N1/50
Filed: 1981-11-24
Abstract: A multi-mode color copier having a photoreceptor 19 for storing color- separated images. The color copier includes a platen input 12 for transmitting color images from an original 13 to the photoreceptor 19, a raster output scanner 59, 85 for writing on the photoreceptor and a raster input scanner 59, 100 for reading developed color-separated images from the photoreceptor. The input to the raster output scanner and the output from the raster input scanner are in the form of digitized video signals which correspond to the color-separated images. In addition to outputting video signals through the raster input scanner, the copier can create color copies by sequentially transferring developed images from a photoreceptor to a copy sheet at 26 and fusing those images to form a permanent color copy. <IMAGE>
Patent GB-2117111-A (GB)
Title: Detecting cracked rice grains
Inventor: SATAKE TOSHIHIKO
IPC: B07C5/342
Filed: 1982-03-16
Abstract: A rice feeding trough (3) is provided at its bottom with a light transmitting window (7) lying between a light source (8) and an optically opposed photodiode. In operation, the transmissivity of a rice grain passing the window (7) gives rise to waveforms such as those shown in Fig. 2. By voltage thresholding, and by measurement of the duration of the various levels by pulse counting the waveforms may be distinguished, the numbers of different grain types counted, and the proportion of cracked grains computed. In particular, cracks reduce the supported duration of a particular level, as shown between X and Y in the Figure. <IMAGE>
Patent GB-2099558-A (GB)
Title: Heat recovery steam generator
IPC: F22B35/00
Filed: 1982-03-24
Abstract: In a combined cycle power plant, otherwise wasted gas turbine exhaust gas is used to heat water into steam in a heat recovery steam generator (HRSG). The HRSG may include three general heating sections in descending order; i.e., the economizer (42), the evaporator (44) and the superheater. One initiative of economizer design is to prevent the transition of water into steam while the water is in the economizer. Otherwise, deposits of corrosion could occur to the detriment of HRSG performance and longevity. Since the heat input from the gas turbine exhaust may vary with load on the gas turbine, it is possible that a design which is satisfactory under normal conditions could lead to 'steaming' in the economizer tubes under low load conditions. One solution to this problem is a multi-section (A, B) economizer (42) which utilizes its full surface length for normal operation and which has a by-pass line 58 for bypassing a portion (A) of its surface length for off-normal operating conditions. <IMAGE>
Patent GB-2100621-A (GB)
Title: Strain tolerant thermal barrier coatings
Inventor: BANAS CONRAD MARTIN
IPC: C23C14/28
Filed: 1982-06-11
Abstract: Methods are described for producing metallic substrates having strain tolerant ceramic coatings thereon. The metallic substrate is provided with an adherent dense ceramic coating. The ceramic coating is then partially melted and allowed to solidify. Cracks develop upon solidification which improve the strain tolerance of the ceramic, and render it resistant to spallation during thermal cycling.
Patent GB-2101167-A (GB)
Title: Bleach composition comprising hydrogen peroxide precursor
Inventor: STEER DAVID CHARLES
IPC: D06L4/10
Filed: 1982-07-05
Abstract: A liquid bleach composition comprises a hydrogen peroxide precursor which includes as an enzyme an alcohol oxidase and as a substrate for the enzyme the corresponding alcohol, the enzyme and the substrate being incapable of substantial interaction in the composition. The composition contains less than 1 unit of catalase for every 2 units of the alcohol oxidase so that peroxide formation, when the composition is diluted with 100 times its volume of water to trigger the interaction of the enzyme and its substrate, is not substantially impaired. The diluted composition has a pH value of from 7.5 to 11. Preferably, the composition also comprises detergent active compound.
Patent GB-2104964-A (GB)
Title: Improvements relating to hydropneumatic accumulators
Inventor: JOHN TREVOR
IPC: F15B1/18
Filed: 1982-08-04
Abstract: A hydropneumatic accumulator of the gas-filled bladder type has the shell (1) thereof provided with a necked region (5) within which the fluid control valve (9) is located, the necked region (5) being adapted to be itself secured to a fluid conduit so that the valve (9) is not stressed, like in the arrangement where the valve has a separate body which supports the shell. Further the valve (9) comprises an axially movable piston (13) which has a radially outwardly tapered end region (33) which can engage with a complementary valve seat (34) when the valve is closed. Thus, whilst clearance is available to allow the piston (13) to move, crevices are removed in the valve closed position due to the snug engagement between `the tapered end region (33) of the piston (13) and the valve seat (34). <IMAGE>
Patent GB-2105349-A (GB)
Title: Process for stabilising chlorinated polyolefins
Inventor: RULEWICZ GERHARD
IPC: C08K9/12
Filed: 1982-08-13
Abstract: The present invention provides a process for stabilising a chlorinated polyolefin present in solution, wherein a stabiliser is applied to a carrier material provided with a hardenable adhesion agent or the stabiliser is applied, together with an adhesion agent, to the carrier material, the stabiliser being present in a layer thickness of at least 0.2 mm., the adhesion agent is hardened at ambient or elevated temperature and the stabiliser thereby bound and the carrier material coated with the stabiliser is introduced into the chlorinated polyolefin present in solution.